They're not God given, we learn them.
Surely some specific moral rules are shaped by local culture. But still from those rules we can extract meta rules which are universal across all cultures.
If we learn them, then there must be some origin. And there are two possibilities:
-- a long time ago some smart guy just invented some rules and they just spread across all mankind
-- those rules are intrinsic to us and have existed prior to our existence
The latter just makes more sense to me, as everything around follows this pattern, so why should we consider ourselves to be a special case?
I believe there are two opposing forces, positive and negative. Life and death. Love and hate. Light and Darkness. The only rules here on Earth are made up by man, but those forces are Intrinsic. If you live in hate, darkness, negativity and death, you will suffer. Your soul knows what's good. I think we're on the same page really!
Yes, it looks like we're talking about the same thing, just using different words. For me the two opposing forces are those: order and chaos.